// 连接数据库
const mongoose = require('mongoose');
const config = require('config');
mongoose.connect(`mongodb://${config.get('db.user')}:${config.get('db.pwd')}@${config.get('db.host')}:${config.get('db.port')}/${config.get('db.name')}`,{useNewUrlParser:true,useUnifiedTopology:true})
    .then(()=>{console.log('数据库连接成功')})
    .catch(()=>{console.log('数据库连接失败')});